[Coin-ipopt] LIWMA/LA problem?
Kranthi K Gade
kranthi at cs.nyu.edu
Sat Dec 4 23:34:37 EST 2004
Hello all,
I have been trying to use IPOPT to optimize a problem with around 2000
variables and 2 constraints. The program gives seg fault on iteration 1.
Here's the output:
******************************************************************************
This program contains IPOPT, a program for large-scale nonlinear
optimization.
IPOPT is released as open source under the Common Public License (CPL).
For more information visit www.coin-or.org/Ipopt
******************************************************************************
Number of variables : 2105
of which are fixed : 0
Number of constraints : 2
Number of lower bounds : 2
Number of upper bounds : 0
Number of nonzeros in Jacobian: 4210
Number of nonzeros in Hessian : 2105
ITER ERR MU ||C|| ||YPY|| ||PZ|| ||D|| ALFA(V)
ALFA(X) NU #LS F #cor Regu CPU(s)
0 .987E+05p .100E+00 .140E+06 .000E+00 .000E+00 .000E+00 .000E+00
.000E+00 .000E+00 0 -.57231356E+03 0 .000E+00 .313E-01
ma27_call: LIWMA increased from 73675 to 1307435
ma27_call: LA increased from 63145 to 1307435
1 .134E+06p .100E+00 .138E+06 .000E+00 .000E+00 .621E+04 .976E+00d
.100E+01h .000E+00 1 -.82994516E+03 2 .100E-03 .938E-01
Can somebody tell me what are these LIWMA and LA? And is there a
problem if they are increased? Also is there a good source (FAQ list or
something) to which I can refer to when faced with such problems?
I am attaching some debugging information just in case you might find it
useful.
Thanks a lot.
kranthi
-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: debug.txt
Url: http://list.coin-or.org/pipermail/ipopt/attachments/20041204/40bf3ffa/attachment.txt
More information about the Coin-ipopt
mailing list